I won the RNG lottery and got my two clears tonight with a chill group. First kill we quite literally had 1-2 seconds left before enrage and I was saying this is going to be a 0% wipe. Second kill was also in enrage but not as close.

I still stand by what I said before that the DPS check is too tight on this boss.

Also,
Gear doesn't help unreals as they sync to i695.
Because you sync down, your materia doesn't have any effect. As a warrior I have lots of Direct Hit materia and that suddenly does nothing when I go into this fight or anything else that syncs me down. I imagine this is annoying for DPS classes that rely on melds like skill / spell speed as well. Yes, you can get your artifact job armor and accessories, minus a second ring, to meld at 690, but I'm not sure that's worth it or should even be expected.